• Kubernetes Submit Queue's avatar
    Merge pull request #63881 from luxas/disable_cadvisor_default · 99e9db58
    Kubernetes Submit Queue authored
    Automatic merge from submit-queue (batch tested with PRs 63881, 64046, 63409, 63402, 63221). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
    
    Disable the public cadvisor port by default
    
    **What this PR does / why we need it**:
    Quoting @tallclair in #56523:
    > We should add the deprecation warning in 1.10 along with a release note, but not change the default. The notes should warn that the default will change in 1.11. We disable the flag by default in 1.11, and remove it entirely in 1.12 or 1.13.
    > If you currently depend on the UI or the API, speak up! Going forward, the recommended way of taking advantage of those features will be to run cAdvisor as a DaemonSet.
    
    Disabling the publicly-available cAdvisor port is beneficial for security, as you might not want to expose the UI with lots of information about what your system is doing. We already did this for all kubeadm deployments in v1.7, and haven't recieved any issues for that. This should be okay to do at this stage, as this flag was deprecated in v1.10. Given we need to support this flag for one more release (v1.11), it makes perfect sense to instead switch it off in preparation for v1.12 when we can delete it (see the [deprecation policy](https://kubernetes.io/docs/reference/deprecation-policy/#deprecating-a-flag-or-cli))
    
    **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
    Part of #56523
    
    **Special notes for your reviewer**:
    
    I removed the e2e test that expects cAdvisor to be running, as we don't expect it to be anymore.
    
    **Release note**:
    
    ```release-note
    [action required] The formerly publicly-available cAdvisor web UI that the kubelet ran on port 4194 by default is now turned off by default. The flag configuring what port to run this UI on `--cadvisor-port` was deprecated in v1.10. Now the default is `--cadvisor-port=0`, in other words, to not run the web server. The recommended way to run cAdvisor if you still need it, is via a DaemonSet. The `--cadvisor-port` will be removed in v1.12
    ```
    cc @kubernetes/sig-cluster-lifecycle-pr-reviews @kubernetes/sig-auth-pr-reviews @kubernetes/sig-node-pr-reviews
    99e9db58
Name
Last commit
Last update
.github Loading commit data...
Godeps Loading commit data...
api Loading commit data...
build Loading commit data...
cluster Loading commit data...
cmd Loading commit data...
docs Loading commit data...
hack Loading commit data...
logo Loading commit data...
pkg Loading commit data...
plugin Loading commit data...
staging Loading commit data...
test Loading commit data...
third_party Loading commit data...
translations Loading commit data...
vendor Loading commit data...
.bazelrc Loading commit data...
.generated_files Loading commit data...
.gitattributes Loading commit data...
.gitignore Loading commit data...
.kazelcfg.json Loading commit data...
BUILD.bazel Loading commit data...
CHANGELOG-1.10.md Loading commit data...
CHANGELOG-1.11.md Loading commit data...
CHANGELOG-1.2.md Loading commit data...
CHANGELOG-1.3.md Loading commit data...
CHANGELOG-1.4.md Loading commit data...
CHANGELOG-1.5.md Loading commit data...
CHANGELOG-1.6.md Loading commit data...
CHANGELOG-1.7.md Loading commit data...
CHANGELOG-1.8.md Loading commit data...
CHANGELOG-1.9.md Loading commit data...
CHANGELOG.md Loading commit data...
CONTRIBUTING.md Loading commit data...
LICENSE Loading commit data...
Makefile Loading commit data...
Makefile.generated_files Loading commit data...
OWNERS Loading commit data...
OWNERS_ALIASES Loading commit data...
README.md Loading commit data...
SUPPORT.md Loading commit data...
WORKSPACE Loading commit data...
code-of-conduct.md Loading commit data...
labels.yaml Loading commit data...